<?php

$a = "123.456" + 123;
var_dump($a);
$a = "123.456" + 456.123;
var_dump($a);
$a = "123.456" + "123";
var_dump($a);
$a = "123.456" + "456.123";
var_dump($a);
$a = "123.456";
$a += 123;
var_dump($a);
$a = "123.456";
$a += 456.123;
var_dump($a);
$a = "123.456";
$a += "123";
var_dump($a);
$a = "123.456";
$a += "456.123";
var_dump($a);
